Now, Australian authorities are working with London police who are investigating the events surrounding the nurse’s death.

Last week, two DJs from Sydney’s 2Day FM station called King Edward VII Hospital, where Prince William’s pregnant wife Kate Middleton was being treated for severe morning sickness. The DJs pretended to be Queen Elizabeth II and Prince Charles. They succeeded in reaching the Duchess of Cambridge’s private nurse.

The DJs have publicly apologized for their actions, and have said they did not think their antics would lead to a tragedy of this magnitude.

"If we had any idea that something like this could even possibly happen, you know? We couldn't see this happening. It was meant to be a prank call," said DJ Mel Greig in an interview with Australia's Seven Network.

"The phone call itself -- there was no malice on our behalf, it was not to agitate or to offend or to dig, at all, it was the joke, the joke was our accent and we just assumed the same phone call would be made 100 times that morning, and we were expecting the same result as the 100 calls that had gone before us," DJ Michael Christian told the network.

A London Metropolitan Police spokesman told HLN they are “not discussing” the particulars of the case.

A spokeswoman for New South Wales Police in Australia told HLN: "As the investigation into the death of London nurse Jacintha Saldhana continues, New South Wales Police will be providing London's Metropolitan Police with whatever assistance they require."

In Session’s legal experts say it is unlikely that the Australian DJs who carried out the prank will be held criminally or civilly liable for Saldhana’s death, because it was not reasonably foreseeable that their prank call to the hospital would result in someone’s death.

However, there are lingering privacy issues that could lead to criminal or civil liability. For example, using a recording device and broadcasting the conversation may be a minor violation of law that could result in a fine or minor civil liability.